| 摘要 |
PROBLEM TO BE SOLVED: To prevent boiling water stored in a heat exchange part from being pumped out into a bathtub just after a start-up a reheating circulating pump, in an electric water heater comprising a reheating heat exchange part disposed in a hot water storage tank. SOLUTION: A bypass pipe 46 connects a return pipe 281 and a feed pipe 282 of reheating piping 28. When the circulating pump 30 is started, boiling water extruded from a reheating coil 22 and low temperature bathtub water flowing into the feed pipe 282 through the bypass pipe 46 mix in the feed pipe 282, so that the temperature of the boiling water is reduced. Alternatively, a part of added water is introduced into the feed pipe 282 to cause the added water and the boiling water to mix in the feed pipe 282, so that the temperature of the boiling water is reduced.
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